package java8_31.printer;

/**
 * @author oldliu
 * @since 1.0
 */
public class A4Paper implements Paper {
    private String brand;
    public A4Paper(String b){
        brand=b;
    }
    @Override
    public void print(String str) {
        System.out.println("A4纸打印：");
        System.out.println(str);
    }
}
